Can heading and sealing machine



Oct. 25, 1932. I H. s. HOGAN 1,884,690

CAN HEADING AND SEALING MACHINE Filed March 3. 1930 6 Sheets-Sheet 2 H. S. HOGAN CAN HE'ADING AND SEALING MACHINE Oct. 25, 1932.

Filed March 3, 1930 6 Sheets-Sheet 3 ATTORNEY Oct. 25, 1932. H. s. HOGAN CAN HEADING AND SEALING MACHINE Filed March 5, 1950 6.Sheets-Sheet 4 III/A m IIII Oct. 25, 1932.

H. s. HOGAN CAN READING AND SEALING MACHINE Filed March 3. 1930 6 Sheets-Sheet 6 Patented Oct. 25, 1932 UNITED STATES HARRY S. HOGAN, OF NEW ORLEANS, LOUISIANA, A. SIGNOR IPANY, OF NEW YORK, N. Y., A CORPORATION OF PATENT OFFICE 'ro AMERICAN CAN oom- NEW JERSEY CAN HEADING AI\TD SEALING MACHINE Application filed March 3, 1930. Serial No. 432,887.

The present invention relates to a can heading and sealing machine and has particular reference to the application of asealing material to can or can body as it is passing through such a machine.

The principal object of the present invention isthe provision of mechanism for applying a sealing material to a can or can body and for securing a. can end or cover thereto. 0 An importantobject of the invention is the provision of an organized apparatus for feeding a can cover or end and for propelling a can or can body through the machine during which time lining or sealing material is applied to the can or can body, the lined can part being subsequently incorporated in .a hermetic seal or joint formed between the can end or cover and the can or can body.

An important object of the present invention is the provision of a sealing material applying device attached to and embodied in a can heading and double seaming machine.

A further important object of the invention is the provision of an applying head for a sealing machine, the head containinga supply of liquid sealing material and operating at periodical intervals to apply a film of such material to a succession of cans or can bodies passing through. the machine.

provision. of associated mechanisms operating in a unit machine for advancing a can or can body therethrough, for depositing a sealing material on a flange thereof, for fee-ct ing a can end or cover automatically from a stack, and for double seaming together the can or can body and its can end or cover to incorporate the applied sealing material.

Numerous other objects and advantages of the invention WllllJQ apparent as it is better understood from the .iiollowing description, which, taken in connection with the accompanying drawings, discloses a preferred embodiment thereo Referring to the drawings An important object of the invention is the chine.

.Fig. 2 is a longitudinal section taken substantially along the line 22 in Fig. 1.

Fig. 3 is a sectional plan view taken substantially along the line 3-8 in Fig. 2.

Fig. is a sectional plan view taken substantially along the line 4 -4: in Fig. 2.

Fig. 5 is a perspective detail of one set of can engaging elements associated With the can conveyor. I a

Fig. 6 is a plan sectional view taken substantially along the line 6-6 in Fig. 2.

7 is a plan sectional view taken sub stantially along the line 7? in Fig. 2.

Fig. 12 is an enlarged longitudinal view partly in section, taken substantially along the line 1212 in Fig. 3, parts being broken away.

i Fig. 13 is a fragmentary detailof the sealing material lining head.

The apparatus of the present invention is illustrated in its preferred embodiment in the drawings as comprising a continuously operating mechanism for receiving a' can body and advancing it with a variable motion through the machine. Either a can body or a can formed of the body and a bottom member can be subjected to the various operations of the apparatus, there being illustrated in the drawings a formed can body Figure 1 is a front elevation of the ma Cir sealing material in a hermetic joint. y -can with its double seamed cover is then moved ontoa discharge disc which carries without a bottom member. Inasmuch as the various operations of the machine can be used on either a can body or on a can the term can will be broadly used throughout the following description and claims to designate either a can or a can body.

The can is received into the machine upon a rotating disc and moved into can engaging elements of a can conveyor which is con tinually actuated in a manner to advance the can through the machine butto permit its pause at various operating stations arranged along its line of travel.

The can conveyor thus first brings the canto a lining station and permits it to hesitate in its travel 'longenough for a lining head carrying a supply .of liquid sealing material to lower and to engage the upper flanged end of the can thereby applying sealing material to the flange. The can is then: advanced into a position where it receives a can end or cover which has been automatically removed fromthe bottom of a stack of 1 covers and which is brought at this timeinto axial alignment with the lined can. Both can and cover are then moved 1nto a seaming'station where thecover is secured to the upper end of the can while the can undercontrol-ofits conveyor is permitted to pause-for the necessary time. The secur ing of the cover-to the can is preferably accomplished by a double seaming mechanism that interfol'ds the lined flange of the can with aflangeof the cover, the seam produced by this interfolding fully incorporating tpe T ie it out of the machine.

The mechanism .of the machine is supported by and partially enclosed within a casing 21 (Figs. 1 and 2) carried by a base 22. .A number of spaced upwardly projected tubular members 23 and brackets 24 are carried on the upper part of the casing 21 and support a circular table 25 (see also Fig. over which the cans are moved as they are advanced through the machineand through the various stations.

A can 26 having a flange 27 formed on its upper end is fed into the machine in any suitable manner and is brought upon a revolving disc 28 secured to a vertical shaft 29 journaled inone of the tubular members 23.

In the passage of the can 26 onto the disc 28 it is guided in a circular line oftravel partly :by an inner guide .rail 30 extending over the shaft 29 and held spaced above and secured to the table'25'by a bolt'31 passing through a depending boss of the rail. An outer guide rail 32 also assists in guiding 'thecan, it being spaced from the inner rail and being securedfby bolts 33' to a cross .frameS con- -:nectedto the upper ends of .two of the tu- =bulartmembers23.

Thedisc 28 and its shaft 29 are constantly rotated by a gear train connecting with a drive shaft of the machine. The shaft 29 (Fig. 1) at its lower end carries a gear 35 which meshes with an idler gear 36 (see also Fig. 2) rotating on a stub shaft 37 carried in bearings 38 formed in the casing 21.

The gear 36 meshes with a gear 39 carried on the lower end of a vertical shaft 11 journaled in a bearing 42 formed in the casing 21 and in bearings form ed in one'of the tubular members 23 through which the shaft extends. The gear 39 also meshes with an idler gear 43 rotating on a stub shaft 14 carried in a bearing 45 formed'in the casing 21. The gear 43 also-mesheswith a gear 46 carried by the lower end of a vertical shaft 47 rotating in bearings l8 formed'inthe casing 21 and in a bearing 49 formed in a ring 50 which is part of a vertically' adjusting device that will be hereinafter Iully described.

The ring 50 is securely bolted to a circular ring plate '51 which together with the ring 50 encloses an adjusting ring'gear'52 internally threaded and engaging threads'53 formed on the lower end of a supporting column 54 provided with a bottom flange 55 resting upon and boltedto a cover member 56 formed integrally with the casing2lr The members 50 umn 54 (Fig. 2) carries at its upper end a gear housing 57 secured thereto by bolts 58.

The gear 16 (Figs. 2 and 4) is formed as an integral part of a bevel gear 59 whichmeshes with a similar gear 60. carried on a horizontal shaft 61 journaled in bearings 62formed in a bracket 63 resting upon and secured by bolts 64 to the base 22.

The shaft 61 also carries a worm gear 65 which meshes with a worm 66 carried on the lower end of a vertical shaft 67 journaled in a bearing 68 formed in the cover member 56 and in a bearing 69 formed in the gear housing 57. The upper end of the'shaft 67 carries a bevel gear 71 which meshes with a similar gear 72 carried on a horizontal drive shaft 73 journaledin bearings 74 formed in the gear housing 57 and in a housing cover 75 fastened upon the upper end of the housing.

he shaft 73 carries a drive pulley 76 which is adapted to receive driving powerfrom any suitable source.

- The revolving disc 28 (F after receiving the can 26 carries it'in a circular path between. the guide rails 30 and 32 and moves it therefrom onto the upper surface of the table 25. The can is thereupon engaged and further advanced by a can feeding or conveyor mechanism now to be described. During movement of the can by the conveyor it is guided in a circular path of travel by an outer guiderail .77 held spaced above and se- 1 (Figs. 2 and 5) movement therein.

cam controlled element.

cured to thetable 25 by bolts 78, this rail being an extension of the guide rail 30.

The parts of this conveyor mechanism are carried in a circular frame 81 2, 3 and 8) which is rotatably mounted on a sleeve 82 which encircles the column 54 and. which extends downwardly into the ring plate 51 with which it is integrally associated.

The lower end of the frame 81 is enlarged as at 83and he outer 1 17 13 0f this larged part is formed with gear teeth 85 which mesh with a gearpinion 86 carried on the ring plate51 and enclosed within an extension 87 thereof. The pinion 86 slides vertically upon androta-tes with theshaft 47, a feather and featherway connection 88 being provided for this purpose. As will be hereinafter set forth, the sliding of the gear pinion 86 upon the shaft 47 takes place only when the machine is being adjusted for different can heights and throughout the ordinary operation of the can conveyor-,the gear pinion 86 remains in the same horizontalplane. Constant rotation of the shaft 47 by means of this construction causes the circular frame 81 to rotate aboutthe sleeve 82. 3

Provision is made for propelling the can by devices which will allow for momentary pauses in its travel, notwithstanding the continualrotation of the circular frame 81 and the conveyor parts carried thereby. The frame 81 carries a series of can engaging elements, each comprising an upper arm 91 and a lower arm 92 both arms beingsecured in spaced relation and in vertical alignment on a shaft 93. Each shaft 93 is mounted in a bearing 94 formed in the circular frame andhas slight oscillating The various shafts 93 are equally spaced from the center of the circular frame 81 and are carried bodily at a uniform rate of motion therewith, adjacent shafts being'equally spaced from each other.

The arms 91 and 92 are moved back and forth by an oscillation of the shaft93 within its bearing 94 and this is accomplished by a Each arm 91 is formed with an extension 95 on which is pivotally mounted a cam roller 96 which engages within a cam groove 97 (see also Fig. 3) formed in a face cam 98 mounted upon and held stationary by a casing 113 to be presently described. As the circular frame 81 revolves bodily carrying the arms 91 and 92 of each can engaging elementthe outer can engaging ends of the arms are caused to advance or retract by oscillation of their particular shafts 93 under the influence of the cam groove 97 operating upon the cam roller 96 associated with that element. For

example, as the disc 28 positions a can 26 on to the table 25 that pair of arms 91 and 92 directly behind the incoming can moves from a retarded to an advanced position and into engagement with the can. The engaged can of the shaft 93 and the backward oscillation of the arms 91 and 92 counteract each other and the can therefore stops.

The sealing material applying devices at the lining station comprise a lining head (Figs. 12 and 13) formed as a cup shaped member with an outer vertical wall 106, a bottom 107, and an inner central, tubular part 108. This cup shaped member is supported by and loosely connected with a vertically disposed hollow rod 109, a stem being secured by a bolt 111 to the bottom 107 of theme lining head. The upper end of the stem 110 projects inside of the hollow rod 109 and a laterally extending pin 112 seated in the rod 109 engages an elongated vertical slot out in the stem. The rod 109 also has a closer; 33 sliding fit within the inner part 108 this construction permitting relative vertical movement between the lining head and its supporting rod while maintaining alignment of the moving parts for a purpose hereinafter 11'') fully described.

; Therod 109 has vertical movement within a bearing formed in a bracket 114 carried by a magazine frame projecting as an integral part of a seaming head casing 113 19 mounted upon the column 54. Movement of the rod efiects a corresponding raising and lowering of the lining head which will be further described in connection with a description of the lining operation. 22- The lining head 105 is adapted to contain a liquid sealing material 115 and a predetermined height of liquid is assured by a liquid fountain device (Fig. 12) embodying an inverted bottle 116 supported within a cupped 7 i3 shaped end 117 of a bracket 118 secured by bolts 119 to a projection 121 of the seaming head casing 113. A gasket 122 seated in the bottom of the cup member 117 provides the necessary airtightconnection between the 110 bottle and a feed pipe 123 threaded in the member 117. This pipe is retained in position by a bracket 124 bolted to the frame 125 and the bottom end of the pipe extends into the liquid 115. 335

The bottom 107 of the lining head 105 is provided with a series of perforations 126 through which the sealing liquid passes into an absorbent pad 127 formed by a fabric or other suitable porous material stretched 130 :across the :under side of t hebottom and held in position bya ring 128 securedbyscrews to the eXterior-ofthe wall 106 (see also Fig. 13):. A plate 129 is :held by a screw. 131

against .the under surface of the absorbent pad and thisvprevents sagging of the same as'ithe sealing liquid saturates it.

Devices .now operate to lower the head and causesthe absorbent'pad 127 to contact the upper'fiange 27 i of the can 26' positioned there- -beneath, this action depositing a given amount of sealing material on the flange.

The upper end of thesleeve 109 is threadedly secured in a cam yoke 135 being securely locked therein by a nut 136. The cam yoke 135 is formed with a bifurcated upper end 137=which extends on opposite sides of an enlarged end of a horizontal shaft 138 (Figs. 6 and 12). The shaft 138 is journaled in a bearing 139 formed in the double seaming casing 113 and in a'bearing 141 formed in'a housing 142 bolted to the casing. The shaft 138 is continuously rotated by a gear trai'nnow-to bedescribed. 'A bevelgear 143' secured to the end of the shaft 138 (Fig.

' 6) meshes with'a similar gear 144 carried on a-horizontal shaft 145 journaled in bearings 146'formedin the seaming casing 113. The shaft 145 also carries a worm gear 147 which meshes with a worm 148 secured to a vertical shaft 149 (seealso' Figs. 7 and 9) rotating in bearings 15l'for'med in the casing 113.

The shaft 149 at its lower end carries a I gear 152 which meshes with a similar gear 153 connectedwith the continuously moving shaft 67 by a spline 154. Gear 153 is provided with a downwardly extending hub 155 (Fig. 2) rotating in a bearing 156 projected from a bracket 157 carried by the casing 113. A thrust ballbearing 158 is secured to the end of the hub 155 and insures free rotation of the gear 153 within its bearing 156.

The shaft 138 (Figs. 6 and 12) carries a c'am- 161 which is provided with a cam groove 162 in which operates a cam roller 163 carried by the yoke 135. The continuous rotation of the cam 161 raises and lowers the rod 109 and the'lining'head 105 for the purpose described. 7 I

The linin'ghead 105 being loosely held on the rod 109 by the connecting parts 112 and '120 its weight when in raised position holds the end of the slot 120 against the pin 112. As the rod 109 lowers, the absorbent pad of "the-head first engages thefiange of the can comingto rest as the rod continues downwardly, the" pin 112 thereupon moving toward the lower end ofthe slot 120. In this inanner the sealing material is evenly applied,the entire weight of both the head and the liquid material carried thereby, providing-the proper pressure.- This loose connect'ion also allows for some variation in the height of the can.

It is desirable to change the position of the absorbent pad 127 of the lining head 105 for each lining operation on each succeeding can inorder to insurethat the same part of the flangeof the can does not fall at the same position on the absorbent pad. For

12 and 13) and the teeth formed thereby are engaged by the free end of a latch 165 pivoted on a screw 166 secured to one wall of the magazine frame 125. A spring 167 is interposed between the screw 166 and the arm 165 and this insures a yielding connection of the arm with the teeth of the part 164.

In the lowered position of the lining head, as illustrated in Fig. 12, the free end of the arm 165 is engaged within a certain tooth on the edge 164, the arm at this time being at an angle to the horizontal. As the head is raised (reaching its uppermost position as,

this purpose the upper edge of the wall 106 of .the'lining head 105 is serrated as at 164 (Figs.

shown in Fig. 13) the arm 165 is moved on its pivot 166 and the end of the arm and the engaged tooth is moved toward the right as the arm reaches its nearly horizontal position. This action effects a slight rotation of the head. Owing to the shape of the-teeth and the shape of the end of the arm 165, lowering of the headcauses "a slipping 6f the arm over the toothededge'164. The arm in this manner is-moved into another tooth read /for acontinuation of the step rotation of the head in the same direction upon a $116- ceeding'lifting of the head.

Following the lining of he flange of the can and during the lifting of the lining head- 105 just described, the can ismoved from the lining station (Fig. 3) the engaging end'of its conveying arms'91 and 92 under action ofthecam'98 again advancing with the rotat- 'ing-frame 81. The can thereupon advances along its circular path of travel being properly guided-by the rail '77 At the same time a can cover 17 5 is being fed-t0 a position above the line of travel of'the advancing can.

The can covers 175 are carried in a maga-' I zine in stacked formation and are fed singly from the stack, the mechanism associated with the' cover feeding operation being supported by the magazine frame 125. The

magazine frame in this position (Figs. 10, 11'

11) are mounted on the plate 181 and sur-" round a vertical opening 186 cut therein. This opening is ofthe same shape andslightly larger than a cover and provides an exit for the covers as they are discharged from the magazine, the rods and blocks 183" and 184 retaining the stacked covers formation. a a

The stack of covers 17 rests against yielding pressure plates 187 contained in cages 188 carried by the blocks 183 and 184. These yielding plates 187 normally support the en tire stack of covers and separate thelowermost cover from the remaining covers in the stack when the former is pulled downwardly by a suction device illustrated in detail in Figs. and 11.

A vertical shaft 191 is positioned beneath the stack of covers and is centrally disposed relative to the opening 186. This shaft has vertical movement within a bearing 192 formed in the web member 17 8 a'feather 193 (Fig. 11) being carried by the shaft 191 and sliding within a featherway 194 formed in A the bearing 192, this construction preventing rotation of the shaft on its own axis.

A suction cup 195 is carried on the upper end ofthe shaft, its interior communicating with a vertical passageway 196 extending through the center of the shaft. A flexible hose 197 communicating with the passageway is secured to the lower end of the shaft and provides a vacuum line leading from any suitable source of vacuum.

Raising of the shaft 191 engages its suction cup 195 against the under surface of the lowermost cover 17 5 within the stack and as the cup moves downwardly the engaged lowermost cover is forcibly pulled downwardly along the edges of the yielding plates 187 which separate this cover from the covers remaining in the stack. Toward the end of its stroke the shaft 191 reaches a point where the separated cover carried by the suction head 195 is deposited on the upper surface of the member 17 8 and at such a time a lateral port 198 (Fig. 10) cut in one side of the shaft and communicating with the passageway, moves below the bearing 192 and air thereupon enters into the suction cup 195, breaking the vacuum and releasing the cover.

The shaft 191 (Figs. 10 and 11) carries a block 199 on which is mounted a cam roller 201 which operates within a cam groove 202 formed in the side of a face cam 203 secured to a horizontal shaft 204 journaled in bearings 205 formed in the side walls 177. The formation of the cam groove 202 is such as to raise and lower the shaft 191 in proper synchronism with the remaining operations of the machine.

The shaft 204 carries a bevel gear 206 which meshes with a gear 207 carried on the lower end of an inclined shaft 208 journaled in a bearing 209 formed in one wall 177 and in a bearing 211 (Fig. 12) formed in the housing142. The upper end of the shaft 208 (Fig. 10) carries a bevel gear 212 which meshes with a similar gear 213 carried by the horizontal shaft 138.

A pair of feed bars 215 are located in ment within horizontal slideways 216 formed therein. The bars 215 at their rear ends are connected on the outside of legs of a U-shape block 217 which has sliding movement within a longitudinal channel 218 formed in the member 178.

The bars 215 move back and forth beneath the stack of can covers 175, the forward ends of the bars when in their rear position being back of and just beyond the edge of the opening 186. The lowermost can end upon being deposited on the member 178 rests in a depression 219 formed in the member 178, this depression providing a passageway orchannel for the cover which is thereupon moved from beneath the magazine into aposition in axial alignment with a can 26 momentarily stopped in its travel with the can conveyor to receive the can cover. i

To effect this transfer of the cover from one position to the other, the feed bars 215 are moved forward, their front edges engaging the cover and moving it along the passageway 219. The feed bars 215 in Fig. 10 are shown in their forward position with the can cover 175 moved directly above and in axial alignment with the can 26, this being the assembling position as the cover drops on the can at this position. The actuating mechanism for effecting this forward feeding movement of the bars 215 is illustrated in Figs. 10 and 11 and will now be described.

The block 217 is pivotally connected at 225 to a link 226 pivoted upon the upper end of an arm 227 mounted on a rockshaft 228 carried by the side walls 177. The arm 227 is pivotally connected intermediate its length as at 229 to a connecting bar 231 in turn connected with a crank 232 formed in the shaft 204. As the shaft 204 continualsecured thereto move back and forth to receive a can cover 17 5 withdrawn by the suction cup 195 from the magazine and to feed the same into assembled position with the waiting can.

The can 26 and its assembled cover 17 5 is then advancedby the arms 91 and 92 of the can conveyor to the double seaming station. lVhile the arms are pivoting backward with their shaft 93 to effect a momentary pause at this station, this being a repetition of conditions previously described when the can paused at the lining station, the can and end are lifted to the seaming head and can and end are united in a double seam. The can is moved on to a head 235 (Figs. 2 and 3) of a plunger 236 sliding in a tubular member 237 projecting upwardly from and formed as an integral part of the casing 21. Side clips 238 are secured on opposite sides of the plunger head 235 and The plunger 2362is raised andloweredby S242 secured to the. shaft 61". The plunger theseprojectupwardlyand inwardly to afford engagementzfor thebottom flange of the can, as itxismoved on'thehhead and xunder the K clip ends.

a-canr positioned directly beneath, the lower end: of the-plunger carrying apin 239 on which is loosely mounted a cam roller 241 which' rides upon the periphery of 'a cam 236.is provided with an extension tail 243 w-hichcarries apin 244on which is mounted a' cam roller 245 operating in a groove 246 formed in the cam 242; The cam groove 246- is;parallel to the periphery of. the cam and Cooperation of the rollers 241 and. 245' result: in a positive raising and lowering of the, plunger 236 anda corresponding raisingand lowering; of the can 26' carried. on its Qhead 23.5. a

closed i th Harvey L. Bryant United States The double seaming mechanism is positioned in axial alignment with and'directly above the plunger head 235and is of a' stand ard type, which maybe thesame as that dis Letters Patent No.v 1,716,618. Such a meclr anism embodies a' stationary'chuck 247? carried on -the lower end of a vertically eXtendingishaft 248 bolted inbearings'249 formed in the casing 113. and held in position by hearing caps 251.

, A seaming head 255'rotates. about the center. shaft 248 and carries a series of slides 256' pivotally connected to links 257. There are four slides disclosed in the drawings.

Each link is connected with the lower end of avertically disposed lever 258 pivoted on a.

shaft259 journal'ed for rotation in the seams ing' head 255'. The. upper end of each lever 59.5258- carries a cam roller 261 which engages apattern cam 262. Each slide 256' carries a;seaming:roller 263 which is caused to follow the-contour 'of chuck 247, the can cover beingseamed' by. rocking of the lever258 on "its pivot259 under the influence ofits cam 262.

.and: forming thedouble seam. Each of the Each shaft 259 isjournaled. in a bearing 265 formed in the'seaming head 255 and carries= a .worm. gear 266 eccentrically mounted thereon. Rotation of the gear 266 by reason Tof its eccentric connection with the shaft 259 causes this pivot point of the lever 258 to moveout and into bring the seaming roller associated therewith into: operation, this action bending theflanges of the can and cover thismeans the seaming head. is constantly; rotated, the operation of double seamingbe:

ing in proper synchronism with the other operating parts'of the. machine. The-gear 27 1' is slotted at 250v to provide clearance for the levers 258.

After the cam'cover has been secured to can, the plunger head 235' is moved downwardly into normal position with its upper surface flush with the surface of the table 25 I and the seamed can is swept from position along the table 25 toward the discharge station. During this later travelof the can from the seaming station, it is guidedin a'circ'ular path by an outer guide rail 275 secured by bolts 276 to the surface of the table 2 5 (see? Fig. 3);v

The moving can passesbeyond the outer guide rail 275-to an inner guide rail 277 connecting' with the end of the'rail 27 5 and held.

in position on the table by a bolt 278 andby the shaft 41 over which it extends. The canv at this position leaves thetable 25 and moves on to the upper surface of a can disch'arge disc 279 carried by and rotating with the shaft 41. The cam passes'between the guide, rail 277 and an outer guide rail 28.1 formed integrally with the rail 32. vThe'di'sc 279: moves the can in the direction: of thearrow in Fig. 3 and out of the machine.

Provision is made for raising or lowering the entire seaming head casing andthe mech.-- anism contamed therewith to. accommodate different heights of cams, the table 25-and the can conveyor remaining at the sameheight.-

To accomplish this, the ring gear 52- (Eig. 2) is rotated on the 'supportingcolumn54 caus ing its. internal threads to traversefithe threads 53 of the column. This rotation of" the gear moves it vertically and this-vertical movement is imparted to the'ring50-and' the ring plate 51 between whichthe gear is con;-

Inasmuch as the circular frame 81-, the

seaming head casing 113, and all parts car ried thereby are supported'onthe. plate 51,iai

vertical change of thelatter effects a complete and simple change for the'lining, cover feeding and seaming operations. A feather: 168 (Figs. 2, 3 and 6) set vertically in the:

column 54 prevents turning'of; the seaming" head casing 113 while permitting vertical movement thereon. The shaft 67 forms: the central actuating member for themoving partsofthe lining, cover feeding and seaming mechanisms and the splinedf connection. 154 between the shaft and the-gear. 153 automatically compensates for the vertical ad"- justments under consideration; I

Rotation of the rlng gear 521s accomalustrated in Fig. 2. The ring'gear'52'isprovided with worm gear threads 285 arranged.

on itsout-er periphery which mesh with. the threads of a horizontally disposed worm 286;

plished by a worm and worm gear device,il'-

rotatably mounted in the ring andthe ring plate 51. One end of the Worm 286 is provided with a square head 28? which may be engaged by a Wrench or other suitable turning tool.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. In a can heading and sealing machine, the combination of a can feeding device for feeding cans with a flanged end into the machine, means for lining the flanged end of said can with a sealing material, said means causing the sealing material to be applied to the upper surface of the cam flange, a can cover feeding device for bringing a cover to the flangelined can, and mechanism for securing the cover on the can in a sealed joint.

2. In a can heading and sealing machine, the combination of a can feeding device for feeding cans with a flanged end into the machine, a can conveyor for receiving the cans from said feeding device and advancing them through flange lining, cover assembling and cover seaming stations, means at the lining station for applying a sealing material to the upper surface of the flange of the can, devices adjacent the assembling station for bringing a cover into alignment with the flange-lined can, and mechanism at the seaming station for interfolding the lined flange of the can with a flange of its aligned cover to form a seamed joint between can and cover.

3. In a can heading and sealing machine, the combination of a can feeding device for feeding cans with a flanged end into the machine, a can conveyor for receiving the cans from said feeding device and advancing them through flange lining, cover assembling and cover seaming stations, said conveyor comprising a continuously moving actuating member carrying intermittently movable can engaging elements by which said can is caused to pause in its travel through the machine at the Various stations, means at the lining station for applying a sealing material to the flanged end of the can, devices adjacent the assembling station for bringing a cover into alignment with the flange-lined can, mecha nism at the seaming station for inter-folding the lined flange of the can with a flange of its aligned cover to form a seamed joint between can and cover, and a discharge member for receiving the seamed can from said conveyor and removing it from the machine.

4. In a can heading and'sealing machine, the combination of a can conveyor for inter-- mittently advancing a flanged can through a flange lining station and a cover seaming station, a lining head located at said lining station and adapted to carry sealing material, means for moving said head into contact with the flange of said can whereby some of the sealing material is transferred to the said flange. when the can is at rest at the lining station, and mechanism at the seaming station for securing a can cover on said flangelined can when the latter is at rest at that station.

5. In a can heading and sealing machine, the combination of a can conveyor for intermittently advancing a flanged can through a flange lining station and a cover seaming station, a lining head provided with an absorbent pad located at said lining station and adapted to carry liquid sealing material in communication with said pad, means for moving the liquid filled absorbent pad of said head into contact with the flange of said can whereby some of the sealing material is transferred to the said flange when the can is at rest at the lining station, and mechanism at the seaming station for securing a can cover on said flange-lined can when the latter is at rest at that station.

6. In a can heading and sealing machine, the combination of a can conveyor for intermittently advancing a flanged can through a flange lining station and a cover seaming station, a lining head located at said lining station and adapted to carry sealing material,

means for moving said head int-o contact with the flange of said can whereby some of the sealing material is transferred to the said flange when the can is at rest at the lining station, devices for rotating said head when out of flange lining position to present a different surface to the flange of the next succeeding can to be lined, and mechanism at the seaming station for securing a can cover on said flange-lined can when the latter is at rest at that station.

7. In a can heading and sealing machine, the combination of a can conveyor for intermittently advancing a flanged can through a flange lining station, a can and cover assembling station and a cover seaming station, a lining head located at said lining station and adapted to carry sealing material, means for moving said head into contact with the flange of said can whereby some of the sealing ma terial is transferred to the said flange when the can is at rest at the lining station, devices adjacent the assembling station for feeding a cover from a stack of covers and bringing it into alignment with the flange-lined can, and mechanism at the seaming station for securing said can cover on said flange-lined can when the latter is at rest at that station.

8. In a can lining machine, the combination of a can conveyor for advancing a flanged can through a flange lining station, a lining V 8 es-seam head provided with an absorbent pad located at saidstationand: adapted to carry sealing material in communication with said pad, and means for moving; the liquid filled absorb- ,ent pad of said head into contact with the upper surface of the flange of said can Whereby some of the sealing materlal is transferred to the said flange when the can is at rest at said station.

HARRY S. HOGAN. 

